Draft-rigging for railway-cars.



G. A. JOHNSON. DRAFT RIGGING F011 RAILWAY (mes APPLICATION TILED MAY 26, 1913- "Patented Mar; 31] I914.

3 SHEETS-SHEET 1.

1NVENTOR.= G ee/3F ALTO/1115 r7 4 WITNESSES: %4 n/fi? 8 ATTORN Y G. A. JOHNSON; DRAFT RIGGING FOR'RAILWAY GAB-S.

APPLIOATIO N IILED MAY 26,1913.

Patented Mar. 31, 1914 TsHEBTs sHBBT 2.

I: :32: Zn .h l l l 1| v A HH IA IN V EN TOR. eorqe A. @fmso TNESSES G. A. JOHNSON.

DRAFT RIGGING FOE RAILWAY mas. I

APPLICATION FILED MAY 26, 191B.

gghaga, Patented M21131, 1914 3 SEEETS-SHEET 3.

FIGS.

WITNESSES.- INVENTOR an rra srarns. 'rnn ores, 4

GEORGE A. JOHNSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM H. MINER, OF

1 CHICAGQ'ILLINOIS. I

DRAFT-RIGGING non RAILWAY-cans.

Specification of Letters Patent.

Patented its. 31,1914.

Application filed May 26, 1913. Serial No. 769,795.

To all whom it may concern:

Be it known that I, GEORGE A. JOHNSON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have inventeda certain new and useful Improvement in Draft-Rigging for Railway-Cars, of which the following is a 'full, clear, concise, and exact description,

'liminary spring compressed.

reference being bad to the accompanying drawings, forming a part of this specifica; tlon.

My invention relates to improvements 'in draft rigging for railway cars.

The object of my invention is; to Provide a draft rigging of high cushioning capacity.

In the drawings forming a part of this specification Figure 1 is a plan View partly in horizontal section of a draft rigging em bodying my invention, and showing the parts thereof in normal position. Fig. 2 is a plan view partly in horizontal section showing the position of parts with the pre- Fig. 3 is a half cross sectional view on line 3-3 of Fig. 1. Fig. 4 is a half cross section View on line 4-4 of Fig. 1. Fig. 5 is an enlarged detail showing in perspective the wedge and the friction elements at one side of the wedge.

Referrlng' to the drawings 6, 6 represent draft members or parts of the car frame. to

which the draft rigging is applied, 7 the end sill, 8 the draw bar carry iron, 9 the draw bar, 10 the draft yoke, 11 the tie plate suitably secured to the draft members, preferably by the bolts 12, 12. The draft members G, 6 are provided with stop members,

preferably integral therewith, having the rear stop shoulders 13, 13, front stopshoulders 14, 14 and preliminary stop shoulders 15, 15.

' 16 represents the draft gear comprising a shell 17, friction elements 18, main springs 19, 19, preliminary spring 20, a preliminary spring case 21' and apreliminaryspring cap 22. The shell 17 is a hollow member, pref 13, 13. At its forward end the shell is provided with .the outwardly extended flanges 25, 25, which are adapted to engage the construction the shell is also provided with a rearwardly extended boss 26 against which the rear end of the draft yoke is adapted to engage, and in the recess 27 which is received the nut 28 of the connecting rod 29. The friction elements 18 are within the. shell 17, and comprise a wedge 30, the outer friction blocks 31, 31 and the intermediate friction blocks-32,32; .v v

The Wedge 30 is preferably triangular in horizontal section, and is provided with the lateral wedging faces, 33, 33, each adapted to engage. anadjacent wedging face 34 of one of the intermediate friction blocks, 32. The intermediate friction blocks 32 are each preferably triangular in horizontal section,

each having an inner, wedgingface 34, an

outer Wedging face 35 and a rear friction face 36 which engages the rear inner face .of the shell. The intermediate friction blocks are transversely movable within the shell,

and are each provided with a slot 37 disposed longitudinally of the shell, andsof' 4 sufficient width to permitvthe passage of a spring bolt 38 hereinafter described there- A I through without limiting the transverse movement of said intermediate friction blocks in the action of the draft gear. The outer friction blocks are each preferably outer friction face 40 adapted to frictionally engage the inner face of the adjacent side of'the shell 17. Each of the outer friction blocks is provided with a longitudinal per: foration 41 for the passage of a spring-bolt 38, the head 42 of each spring bolt beingpreferably slightly countersunk in the for-2 ward face 43 of the outer friction block.

Each spring bolt; 38 passes through an,

outer friction block and the adjacent inter mediate friction block through the Openings 41 and 37 respectively therein, and rearval'dly through a perforation 45 in'the rear,

plate of the shell, terminating a suitable distance rearw ardly of the shell herein. Each connecting bolt beans at itsrear end a a spring washer 46, each spring washer having a recess 47 inthe rear facethereof to receive'the nut 48 with which the rear end of the spring bolt 38 is-provided. Asst ofmain springs 11) is seated between each ofv outer spring 51 andan inner spring 52 nest ed therein, the said preliminary spring be ing forwardly seated against the spring cap 22.

The spring cap 22 comprises a plate 53 outwardly provided with a rearwardly extended flange 54, which surrounds the forward end of the preliminary spring case 21, and centrallyprovided in itsforward face with a recess 55 to receive the head 56 of the connecting rod 29, which passes through said preliminary spring cap 22 through a perforation 57 in the rear end of the preliminary spring case, and through a perforation 58 in the wedge, and a perforation 59 in the rear end of the shell, the same being adapted to hold the parts throughwhich it passes ,in assembled relation. On rearward movement of the. draw bar the preliminary spring cap nary spring case 21 until the spring cap guided bythe flanges 54 thereof engages the forward end of the preliminary spring case, the preliminary spring case being then on continued rearward, movement of the draw barmoved rearwardly, forcing the wedge rearwardly, which in turn forces the intermediate friction blocks outwardly, the same being in frictional engagement with the wedge, the shell and the outer friction blocks. The said intermediate friction blocks in turn force the outer friction blocks forwardly in longitudinal movement. The said outer friction blocks by means of the spring bolts-3S and the spring washers thereon'then draw the main springs forwardly into compression against the shell.

During the movement of the parts just del t l l l i i i l l l movement of the draw bar the shellis; stopped against rearward movement through its engagement with the rear stop shoulders 13, 13. On forward movement of the draw bar the yoke draws the shell forwardly, the i shell, and bolts connecting the same to the preliminary spring cap being seated against 1 and stopped by the preliminary stop shouli i t ther forward movement of the draw bar the wedge, friction blocks and main springs come into action in the manner in relation to each other hereinbefore described. Upon engagement betweenthe preliminary spring case and preliminary spring cap following the compression of the spring the shell continues to move forwardly, the friction elements and main springs being .in action during such movement, until the flanges 25, 25 of the shell 1.7 engage the front stop shoulders 14, thus limiting the further forward movement of the gear.

I claim 1. In a dra tt gear, a shell, a wedge, transversely movable friction blocks engaging the wedge, and longitudinally movable friction blocks engaging the transversely movable friction blocks within the shell, springs seated without the shell and connected to the longitudinally movable friction blocks.

2. In a draft gear, a shell, a wedge, transversely movable friction blocks and longitudinally movable friction blocks with in the shell, springs seated against the shell, spring bolts engaging said springs, the spring bolts passing through the transversely movable friction blocks and connecting with the longitudinally movable friction blocks.

3. In a draft gear, a shell, a wedge within ,tlie shell, main friction blocks arranged 22 is forced rearwardly, compressing the;

preliminary spring 20 within the prelimieither side of the wedge and adapted to be spread thereby, supplemental friction blocks engaging the main friction blocks and adapted to move longitudinally of the shell,

1 main springs seated against the shell, and

bolts connecting the main springs to the supplemental friction blocks.

4. In a draft gear, a shell, a wedge within the shell, main friction blocks arranged either, side of the wedge and adapted to be spread thereby, supplement-a1 friction blocks engaging the main friction blocks and adapted to move longitudinally of the shell, main springs seated against the shell, and bolts connecting the main springs to the supplemental friction blocks, the main friction blocks being slotted for the passage of said bolts. Q

5. In a draft gear, a shell, a supplemental spring, a case for the same, a wedge conscribed and occasioned by the rearward nected with said case, main friction blocks engaging the wedge and shell, supplemental :riction. blocks engaging the main friction blocks and adapted to be given longitudinal movement thcrel'iy, main springs without the supplemental. friction blocks.

6. In a draft gear, a shell, friction mechanism within the shell, a supplemental spring connected to the friction mechanism and main springs. the friction mecl1anism-com prising a wedge, transversely movable friction blocks and longitudinally movablefriction blocks, the main springs being seated and supplemental without the friction shell and adapted to be compressed by the longitudinally movable friction blocks.

7. In a draft rigging for railway cars, a draw bar, a draft gear, stop members and means connecting the draw bar and draft gear, the stop members having main stop shoulders and supplemental spring stop shoulders, the draft gear comprising a shell friction mechanism within the shell, main springs connected to the friction mechanism, a supplemental spring and spring case, the supplemental spring being seated against the sn )plemental spring stop shoulders on :t'orward movement of the draw bar, and the spring case being adapted on such movement to stop them-edge after compression of the preliminary spring.

8. In a draft gear, a shell, a wedge, main friction blocks within the and spring bolts conthe supplemental fricthe main springs into shell, main springs necting the same to non blocks to draw &

compression on 'movement of the friction blocks, the supplemental friction blocks being movable longitudinally of the shell and being adapted to be actuated by the main friction blocks' 9. In a draft rigging for railway cars, a draw bar, stop members, a yoke, a shell, friction blocks and a wedge within the shell, main springs connected to the friction blocks, a spring case engaging the Wedge, a supplemental spring Within the spring case and a spring cap engaging the supplemental spring, the spring cap being adapted to engage stop shoulders on forward movement. of the draw bar,-and the spring case being adapted to engage the spring cap after the compression of the'preliminary spring, and to stop the movement'of the wedge.

GEORGE A. JOHNSON.

\Vitnesses ELEANOR L. NASH, I J nn A. MARTINKUS.

M copies of this patent, may be obtained (or five cents each, by addrening the Oommlulonex of latex.

' walhlngton, D. 0." 

